001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.codegen.intrinsics;
018
019import com.intellij.psi.PsiElement;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.annotations.Nullable;
022import org.jetbrains.asm4.Type;
023import org.jetbrains.asm4.commons.InstructionAdapter;
024import org.jetbrains.jet.lang.resolve.java.AsmTypeConstants;
025import org.jetbrains.jet.codegen.ExpressionCodegen;
026import org.jetbrains.jet.codegen.StackValue;
027import org.jetbrains.jet.codegen.state.GenerationState;
028import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
029import org.jetbrains.jet.lang.psi.JetCallExpression;
030import org.jetbrains.jet.lang.psi.JetExpression;
031import org.jetbrains.jet.lang.resolve.BindingContext;
032import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
033import org.jetbrains.jet.lang.types.JetType;
034
035import java.util.List;
036
037public class EnumValueOf implements IntrinsicMethod {
038    @Override
039    public StackValue generate(
040            ExpressionCodegen codegen, InstructionAdapter v, @NotNull Type expectedType, @Nullable PsiElement element,
041            @Nullable List<JetExpression> arguments, StackValue receiver, @NotNull GenerationState state
042    ) {
043        JetCallExpression call = (JetCallExpression) element;
044        ResolvedCall<? extends CallableDescriptor> resolvedCall =
045                codegen.getBindingContext().get(BindingContext.RESOLVED_CALL, call.getCalleeExpression());
046        assert resolvedCall != null;
047        CallableDescriptor resultingDescriptor = resolvedCall.getResultingDescriptor();
048        JetType returnType = resultingDescriptor.getReturnType();
049        assert returnType != null;
050        Type type = state.getTypeMapper().mapType(returnType);
051        assert arguments != null;
052        codegen.gen(arguments.get(0), AsmTypeConstants.JAVA_STRING_TYPE);
053        v.invokestatic(type.getInternalName(), "valueOf", "(Ljava/lang/String;)" + type.getDescriptor());
054        StackValue.onStack(type).put(expectedType, v);
055        return StackValue.onStack(expectedType);
056    }
057}